https://www.reddit.com/r/AskReddit/comments/6ixu2zWhen I lived in Rostov on Don, Russia a couple years ago, I got lost between some old apartment buildings on my way home, and I stumbled upon an alley courtyard area with an abandoned Soviet helicopter. It was totally covered with graffiti and had no doors, but it was quite cool. I have no idea what it was doing in a residential alley.
Edit: I guess it has doors, haha. Oops.
Edit: Here's some pictures of it, I guess my comment with the picture got buried. It's an МИ-8 helicopter. Photo